Restart Geddy, and you'll see the new route working. Hit your
new route -- for example, http://localhost:4000/snow_dogs.json,
and you should see something like this:

{"method":"index","params":{"extension":"json"}}

The geddy generator utility also handles fancy pluralization
between model and controller. Specify your resource-name as a
singular naun, and the generator will do the right thing --
changing 'person' to 'people,' etc.

Data-validation happens on the call to create, and any
validation errors show up inside an errors property on
the instance, keyed by field name. Instances have a valid
method that returns a Boolean indicating whether the instance
is valid.